Refresh Collection service on main mashup after popup close

Hi Team,

Suppose I have:-

1. Ist Mashup which is having main service for collection data.

2. 2nd mashup which is actually static mashup of collection having one button.

3. 3rd mashup which is a popup and it opens after clicking on button in 2nd mashup.

I want to refresh the ist mashup's main service on popup close, then how will I pass the popup close event from 3rd mashup to ist mashup?

Thanks in advance.